The bearing of a coastal lighthouse from a cargo vessel is . Determine the bearing of vessel from lighthouse .
Answer and explanation
Correct answer: D.
- Step 1: When a bearing , the back bearing is obtained by subtracting : .
- Step 2: Calculate: . Written in standard 3-digit notation, this is .
Answer
.
Why not the others: '' is an arithmetic subtraction error; '' calculates ; '' adds instead of subtracting .
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